what is syn ack

TCP Handshake Protocol In the TCP/IP protocol, the TCP protocol provides a reliable connection service, and a three-time handshake is used to establish a connection. First handshake: When the connection is established, the client sends the SYN

1 DDoS: Distributed Denial of Service DDoS attacks, that is, distributed denial-of-service attacks, are common attacks that are difficult to prevent. Hackers generally attack domain names by creating botnets, that is, embedding specific malicious

Document directory In TCP/IP, TCP provides reliable connection services and uses three handshakes to establish a connection, as shown in figure 1. In TCP/IP, TCP provides reliable connection services and uses three handshakes to establish a

What is FTP?FTP is the abbreviation for the file Transfer Protocol files Transfer Protocol.What is the FTP port number?21stCan I change the port number of FTP?YesWhat is the difference between port number 20 and 21 for FTP?One is the data port, one

The purpose of this article is to explain the implementation and Prevention Measures of IP spoofing to readers. It requires you to have a little knowledge about UNIX and TCP/IP. If you do not have one, it does not matter. I believe the following

[Scenario description] The client is started, and the server is started. The client initiates a connection The client sends a packet containing the four bytes of "Hutu" Client disconnection, server disconnection [Process diagram]No picture, no

Possible attacks from the server1. SMS ConsumptionPlatform registration when you do not enter the verification code can click Free to obtain a verification code, hackers if the dynamic IP repeatedly enter a large number of mobile phone number Click

Original: http://www.cnblogs.com/CBDoctor/archive/2012/10/17/2727073.htmlIn the TCP/IP protocol, the TCP protocol provides a reliable connection service with a three-time handshake to establish a connection.First handshake: When a connection is

In Linux network programming, using the Listen function to listen to sockets, the use of Man in Linux, the 2nd parameter is explained as follows: The backlog argument defines the maximum length to which the queue of pending connections for

TCP/IP three-time handshake and HTTP procedures1. TCP connectionMobile phone can use the network function is because the bottom of the mobile phone implementation of TCP/IP protocol, you can make the mobile phone terminal through the wireless

The network is divided from bottom to topThe physical layer, the data link layer, the network layer, the Transport layer, the session layer, the presentation layer, and the application layer.with a preliminary understanding, I know that the IP

Reference Document: Https://www.cnblogs.com/feng9exe/p/8058891.html6566430929557837Https://www.cnblogs.com/zmlctt/p/3690998.htmlHttps://www.cnblogs.com/thrillerz/p/6464203.html511464895224154160468161TCP Message Format:1. Port number: A different

The tcp  three-time handshake tcp  connection is initialized by a three handshake. The purpose of the three handshake is to synchronize the serial number and confirmation number of both sides of the connection and to Exchange  TCP  window size

This is the application of someone else's article: Summary : Tags : . NET, flood attacks, IP spoofing Abstract: A method of the IP spoof and SYN Flood Attack based on Micosoft. NET are discussed in this article. TCP SYN Flood Attack and IP spoof

Introduction to TCP three-time handshake The TCP handshake requires two identifiers in the identity bit: SYN and ACK, and the SEQ sequence number and ACK acknowledgement number in the message;The ACK confirmation number above and the ACK

1 DDoS: DistributedDenialofServiceDDoS attacks, that is, distributed denial of service attacks, which are often used and difficult to prevent by hackers. Hackers generally attack domain names by creating botnets, that is, planting specific malicious

In the TCP/IP protocol, the TCP protocol provides a reliable connection service with a three-time handshake to establish a connection. First handshake: When a connection is established, the client sends a SYN packet (SYN=X) to the server

I. Introduction to the TCP protocolTCP, full name transfer Control Protocol, the Chinese name is the transmission protocol, it works in the OSI Transport layer, providing reliable connection-oriented transport services.The main task of TCP is to

Port Scan 234 Layer discovery is only to accurately discover all live host IP, identify attack surface, port scan to discover attack point, Discover open port. The port corresponds to the Network service and application program, and the

TCP Message format source:Source Port for sending TCP Data dest:Destination Port for receiving TCP Data seq:Start serial number that identifies the data bytes contained in the TCP ack_seq:Confirm the serial number, indicating the data serial